need help with my HPS light

i was wondering if a box that is 16 in deep by 20 in wide and 3 foot tall is to small to use a 150hps the light .. it has no cooling tube would this be okay

I highly doubt it. Your light would be putting out 10% of the heat, of a 1,500 watter heater. I think that box is much smaller then 10% of the room area this heater could make to hot.
Get some ventilation somehow. While still keeping the light out, and you should be golden.

Easy Bake Oven. ^^^what he said.

lordjin said:

Easy Bake Oven. ^^^what he said.

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HAHAHAHA. pretty much the same thing.

well its in a fixture with a glass plate over it.. but its not a cool tube... u all think if i mounted it in the back of the box and cut into the fixture and installed a pc fan to vent just the light plus my exhaust fan and intake running think that would help keep temps down... this is my 1st HPS grow and i just dont want to run into any problams

the temperature on the outside of the box will have an effect as well, atleast from my epxerience. you could always set it up and let it run for a few hours then check the temps to see if you need more of an exhaust

and this will be in my basement so the air temps are a bit cooler down there i might not have a problam at all but i am picking up my light tomarrow and i will get it installed and see what kind of temps the cab will be at and ill let everyone know so we can take it from there